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O2 Data Sim Card Comparison - April 2026

5 Best O2 Data Sim Card In the UK

1
Best Choice
9.8Exceptional
2
Best Value
9.6Exceptional
3
9.5Excellent
4
9.2Excellent
5
9.1Excellent
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Model

O2 Data Sim Card Preloaded with UNLIMITED 4G/5G Data. Includes 25GB to Roam for Free in 47 Countries. No Contracts, No Commitments, No Credit Checks, No Tie-ins, No Personal ID. (Valid for 1 Month).
Model
O2 SIM Card UK & EUROPE PREPAID PAYG £15 Bundle 25GB data, unlimited minutes & texts
Model
O2 Unlimited 5G Data SIM - Perfect for unlocked Phones, Routers, Tablets and Wifi Dongles - Activate anytime when you receive the SIM - Choose your Data Duration (6 Months)
Model
O2 SIM Card UK & EUROPE PREPAID PAYG £10 Bundle 8GB data, unlimited minutes & texts
Model
O2 Unlimited 5G Data SIM. Perfect for unlocked Phones, Routers, Tablets and Wifi Dongles - Activate anytime when you receive the SIM - Choose your Data Duration (2 Months)

Brand

Sims4Travel
Brand
love 2 surf
Brand
Scancom
Brand
love 2 surf
Brand
Scancom

Reviews

962 reviews
Reviews
2,810 reviews
Reviews
56 reviews
Reviews
2,810 reviews
Reviews
20 reviews

Tech Specs

product dimensions

8.6 x 0.1 x 5.4 cm 2 g
product dimensions
-
product dimensions
15 x 9 x 0.1 cm 100 g
product dimensions
-
product dimensions
15 x 9 x 0.1 cm 10 g

Available On

Available On
Available On
Available On
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Our Top 3 Picks

Here are the top 3 recommended products with more information to help you find the right product for you
  • 9.8
    1
    Sims4Travel

    O2 Data Sim Card Preloaded with UNLIMITED 4G/5G Data. Includes 25GB to Roam for Free in 47 Countries. No Contracts, No Commitments, No Credit Checks, No Tie-ins, No Personal ID. (Valid for 1 Month).

    Why we love it

    Unlimited data with no contracts.
    Free roaming in 47 countries.
    Supports multiple devices easily.
    Main highlights
    • SPEED YOU WILL LOVE: Working from Home, Streaming Online, Gaming, Scrolling through Social Media - The O2 4G/5G Preloaded SIM card provides amazing performance without any speed restrictions
    • PRELOADED DATA: O2 SIM Card Preloaded with UNLIMITED 4G/5G Data. Enjoy Super-Fast 4G/5G Data Speeds with the UK’s most reliable network. The Data Sim Bundle lasts for 1 month from first use. Easy to renew your bundle for longer
    • NO CONTRACTS: The Preloaded O2 Data SIM Card is simple to activate. There are No Contracts, No Commitments, No Credit Checks, No Tie-ins & No Personal ID required
    • MULTIPLE USES: The Sim comes in a Triple-Sized format, meaning it is suitable for use with all O2 or Unlocked Mobile Wi-Fi devices, Routers, Tablets, iPads, Dongles, Laptops, Mobile Phones, CCTV & Alarm systems. Tethering & Mobile Hotspots are also supported
    • FREE ROAMING: Includes 25GB of Data which can be used to Roam for Free in any of the 47 countries listed in the description below. So whether you are on Holiday, a Business Trip or Working from Home, you can count on the Preloaded O2 4G/5G Data SIM for reliable & super-fast internet
  • 9.6
    2
    love 2 surf
    17% Off

    O2 SIM Card UK & EUROPE PREPAID PAYG £15 Bundle 25GB data, unlimited minutes & texts

    Main highlights
    • Quick & Easy Sim Activation
    • MUST USE SIM IN UK PRIOR TO USE IN EUROPE – data is limited to 25GB while roaming (calls & texts allowance is for UK numbers only)
    • Included in the bundle 25GB data, unlimited voice minutes and texts
    • INTERNATIONAL CALLING SERVICE TO USE WITH SIM - E.g. USA - 0.3p/min and EU - 0.3p/min (optional extra)
    • Bundle lasts 30 days from activation. Trio SIM fits any unlocked 4G and above phone or devices locked to O2 network. Personal hotspot/tethering allowed.
  • 9.5
    3
    Scancom

    O2 Unlimited 5G Data SIM - Perfect for unlocked Phones, Routers, Tablets and Wifi Dongles - Activate anytime when you receive the SIM - Choose your Data Duration (6 Months)

    Why we love it

    Easy activation with QR code.
    Compatible with multiple devices.
    No contract or recurring fees.
    Main highlights
    • ZERO CONTRACTS - Benefit from our data services without the burden of contracts or recurring fees.
    • VERSATILE TRIPLE CUT SIM - Our all-in-one sim card fits any Standard, Micro, and Nano size device.
    • UNIVERSAL DEVICE COMPATIBILITY - Optimised for Smartphones, Tablets, Laptops, Mobile Wi-Fi Dongles, Routers, IoT Devices, Smart Meters, Vehicles, Drones, GPS Trackers, Smart Home Devices & Security Cameras.
    • EXCLUSIVE UK DATA-ONLY - Tailored for data usage with a 600GB/month fair use UK-only data allowance. This Sim card does not support calls, texts, or roaming.
    • DEDICATED CUSTOMER SUPPORT - For any connection queries, our customer support team at Scancom is ready to assist you. Please contact support@scancom.co.uk
    • DATA RENEWAL OPTION - Extend your data usage beyond the initial term with the option to renew at the end, ensuring continuous connectivity without interruption.
    • ANYTIME ACTIVATION - Activate your Sim by scanning the supplied QR Code and enjoy 6 months of 4G & 5G data. We will activate your sim within 1 business day.
    • *Breach of fair usage policy: Data usage where users regularly tether to 12 or more devices or have used 600GB of data twice within a 6-month period. This includes fraudulent, abusive, illegal, nuisance, or outside normal commercial practice usage.

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When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.